Revert of Move core web_view code to extensions.

chrome/browser/guest_view/web_view/web_view_guest.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/guest_view/web_view/web_view_guest.h"
+
+#include "base/message_loop/message_loop.h"
+#include "base/strings/stringprintf.h"
+#include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/extensions/api/web_request/web_request_api.h"
+#include "chrome/browser/extensions/api/web_view/web_view_internal_api.h"
+#include "chrome/browser/guest_view/web_view/chrome_web_view_guest_delegate.h"
+#include "chrome/browser/guest_view/web_view/web_view_constants.h"
+#include "chrome/browser/guest_view/web_view/web_view_permission_helper.h"
+#include "chrome/browser/guest_view/web_view/web_view_permission_types.h"
+#include "chrome/browser/guest_view/web_view/web_view_renderer_state.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/child_process_security_policy.h"
+#include "content/public/browser/native_web_keyboard_event.h"
+#include "content/public/browser/navigation_entry.h"
+#include "content/public/browser/notification_details.h"
+#include "content/public/browser/notification_service.h"
+#include "content/public/browser/notification_source.h"
+#include "content/public/browser/notification_types.h"
+#include "content/public/browser/render_process_host.h"
+#include "content/public/browser/render_view_host.h"
+#include "content/public/browser/resource_request_details.h"
+#include "content/public/browser/site_instance.h"
+#include "content/public/browser/storage_partition.h"
+#include "content/public/browser/user_metrics.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_delegate.h"
+#include "content/public/common/media_stream_request.h"
+#include "content/public/common/page_zoom.h"
+#include "content/public/common/result_codes.h"
+#include "content/public/common/stop_find_action.h"
+#include "content/public/common/url_constants.h"
+#include "extensions/browser/extension_system.h"
+#include "extensions/browser/guest_view/guest_view_constants.h"
+#include "extensions/browser/guest_view/guest_view_manager.h"
+#include "extensions/common/constants.h"
+#include "extensions/common/extension_messages.h"
+#include "ipc/ipc_message_macros.h"
+#include "net/base/escape.h"
+#include "net/base/net_errors.h"
+#include "third_party/WebKit/public/web/WebFindOptions.h"
+#include "ui/base/models/simple_menu_model.h"
+
+using base::UserMetricsAction;
+using content::RenderFrameHost;
+using content::ResourceType;
+using content::WebContents;
+
+namespace extensions {
+
+namespace {
+
+std::string WindowOpenDispositionToString(
+  WindowOpenDisposition window_open_disposition) {
+  switch (window_open_disposition) {
+    case IGNORE_ACTION:
+      return "ignore";
+    case SAVE_TO_DISK:
+      return "save_to_disk";
+    case CURRENT_TAB:
+      return "current_tab";
+    case NEW_BACKGROUND_TAB:
+      return "new_background_tab";
+    case NEW_FOREGROUND_TAB:
+      return "new_foreground_tab";
+    case NEW_WINDOW:
+      return "new_window";
+    case NEW_POPUP:
+      return "new_popup";
+    default:
+      NOTREACHED() << "Unknown Window Open Disposition";
+      return "ignore";
+  }
+}
+
+static std::string TerminationStatusToString(base::TerminationStatus status) {
+  switch (status) {
+    case base::TERMINATION_STATUS_NORMAL_TERMINATION:
+      return "normal";
+    case base::TERMINATION_STATUS_ABNORMAL_TERMINATION:
+    case base::TERMINATION_STATUS_STILL_RUNNING:
+      return "abnormal";
+    case base::TERMINATION_STATUS_PROCESS_WAS_KILLED:
+      return "killed";
+    case base::TERMINATION_STATUS_PROCESS_CRASHED:
+      return "crashed";
+    case base::TERMINATION_STATUS_MAX_ENUM:
+      break;
+  }
+  NOTREACHED() << "Unknown Termination Status.";
+  return "unknown";
+}
+
+std::string GetStoragePartitionIdFromSiteURL(const GURL& site_url) {
+  const std::string& partition_id = site_url.query();
+  bool persist_storage = site_url.path().find("persist") != std::string::npos;
+  return (persist_storage ? webview::kPersistPrefix : "") + partition_id;
+}
+
+void RemoveWebViewEventListenersOnIOThread(
+    void* profile,
+    const std::string& extension_id,
+    int embedder_process_id,
+    int view_instance_id) {
+  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
+  ExtensionWebRequestEventRouter::GetInstance()->RemoveWebViewEventListeners(
+      profile,
+      extension_id,
+      embedder_process_id,
+      view_instance_id);
+}
+
+void ParsePartitionParam(const base::DictionaryValue& create_params,
+                         std::string* storage_partition_id,
+                         bool* persist_storage) {
+  std::string partition_str;
+  if (!create_params.GetString(webview::kStoragePartitionId, &partition_str)) {
+    return;
+  }
+
+  // Since the "persist:" prefix is in ASCII, StartsWith will work fine on
+  // UTF-8 encoded |partition_id|. If the prefix is a match, we can safely
+  // remove the prefix without splicing in the middle of a multi-byte codepoint.
+  // We can use the rest of the string as UTF-8 encoded one.
+  if (StartsWithASCII(partition_str, "persist:", true)) {
+    size_t index = partition_str.find(":");
+    CHECK(index != std::string::npos);
+    // It is safe to do index + 1, since we tested for the full prefix above.
+    *storage_partition_id = partition_str.substr(index + 1);
+
+    if (storage_partition_id->empty()) {
+      // TODO(lazyboy): Better way to deal with this error.
+      return;
+    }
+    *persist_storage = true;
+  } else {
+    *storage_partition_id = partition_str;
+    *persist_storage = false;
+  }
+}
+
+}  // namespace
+
+// static
+GuestViewBase* WebViewGuest::Create(content::BrowserContext* browser_context,
+                                    int guest_instance_id) {
+  return new WebViewGuest(browser_context, guest_instance_id);
+}
+
+// static
+bool WebViewGuest::GetGuestPartitionConfigForSite(
+    const GURL& site,
+    std::string* partition_domain,
+    std::string* partition_name,
+    bool* in_memory) {
+  if (!site.SchemeIs(content::kGuestScheme))
+    return false;
+
+  // Since guest URLs are only used for packaged apps, there must be an app
+  // id in the URL.
+  CHECK(site.has_host());
+  *partition_domain = site.host();
+  // Since persistence is optional, the path must either be empty or the
+  // literal string.
+  *in_memory = (site.path() != "/persist");
+  // The partition name is user supplied value, which we have encoded when the
+  // URL was created, so it needs to be decoded.
+  *partition_name =
+      net::UnescapeURLComponent(site.query(), net::UnescapeRule::NORMAL);
+  return true;
+}
+
+// static
+const char WebViewGuest::Type[] = "webview";
+
+// static
+int WebViewGuest::GetViewInstanceId(WebContents* contents) {
+  WebViewGuest* guest = FromWebContents(contents);
+  if (!guest)
+    return guestview::kInstanceIDNone;
+
+  return guest->view_instance_id();
+}
+
+const char* WebViewGuest::GetAPINamespace() {
+  return webview::kAPINamespace;
+}
+
+void WebViewGuest::CreateWebContents(
+    const std::string& embedder_extension_id,
+    int embedder_render_process_id,
+    const base::DictionaryValue& create_params,
+    const WebContentsCreatedCallback& callback) {
+  content::RenderProcessHost* embedder_render_process_host =
+      content::RenderProcessHost::FromID(embedder_render_process_id);
+  std::string storage_partition_id;
+  bool persist_storage = false;
+  std::string storage_partition_string;
+  ParsePartitionParam(create_params, &storage_partition_id, &persist_storage);
+  // Validate that the partition id coming from the renderer is valid UTF-8,
+  // since we depend on this in other parts of the code, such as FilePath
+  // creation. If the validation fails, treat it as a bad message and kill the
+  // renderer process.
+  if (!base::IsStringUTF8(storage_partition_id)) {
+    content::RecordAction(
+        base::UserMetricsAction("BadMessageTerminate_BPGM"));
+    base::KillProcess(
+        embedder_render_process_host->GetHandle(),
+        content::RESULT_CODE_KILLED_BAD_MESSAGE, false);
+    callback.Run(NULL);
+    return;
+  }
+  std::string url_encoded_partition = net::EscapeQueryParamValue(
+      storage_partition_id, false);
+  // The SiteInstance of a given webview tag is based on the fact that it's
+  // a guest process in addition to which platform application the tag
+  // belongs to and what storage partition is in use, rather than the URL
+  // that the tag is being navigated to.
+  GURL guest_site(base::StringPrintf("%s://%s/%s?%s",
+                                     content::kGuestScheme,
+                                     embedder_extension_id.c_str(),
+                                     persist_storage ? "persist" : "",
+                                     url_encoded_partition.c_str()));
+
+  // If we already have a webview tag in the same app using the same storage
+  // partition, we should use the same SiteInstance so the existing tag and
+  // the new tag can script each other.
+  GuestViewManager* guest_view_manager =
+      GuestViewManager::FromBrowserContext(
+          embedder_render_process_host->GetBrowserContext());
+  content::SiteInstance* guest_site_instance =
+      guest_view_manager->GetGuestSiteInstance(guest_site);
+  if (!guest_site_instance) {
+    // Create the SiteInstance in a new BrowsingInstance, which will ensure
+    // that webview tags are also not allowed to send messages across
+    // different partitions.
+    guest_site_instance = content::SiteInstance::CreateForURL(
+        embedder_render_process_host->GetBrowserContext(), guest_site);
+  }
+  WebContents::CreateParams params(
+      embedder_render_process_host->GetBrowserContext(),
+      guest_site_instance);
+  params.guest_delegate = this;
+  callback.Run(WebContents::Create(params));
+}
+
+void WebViewGuest::DidAttachToEmbedder() {
+  SetUpAutoSize();
+
+  std::string name;
+  if (attach_params()->GetString(webview::kName, &name)) {
+    // If the guest window's name is empty, then the WebView tag's name is
+    // assigned. Otherwise, the guest window's name takes precedence over the
+    // WebView tag's name.
+    if (name_.empty())
+      name_ = name;
+  }
+  ReportFrameNameChange(name_);
+
+  std::string user_agent_override;
+  if (attach_params()->GetString(webview::kParameterUserAgentOverride,
+                                 &user_agent_override)) {
+    SetUserAgentOverride(user_agent_override);
+  } else {
+    SetUserAgentOverride("");
+  }
+
+  std::string src;
+  if (attach_params()->GetString("src", &src) && !src.empty())
+    NavigateGuest(src);
+
+  if (GetOpener()) {
+    // We need to do a navigation here if the target URL has changed between
+    // the time the WebContents was created and the time it was attached.
+    // We also need to do an initial navigation if a RenderView was never
+    // created for the new window in cases where there is no referrer.
+    PendingWindowMap::iterator it =
+        GetOpener()->pending_new_windows_.find(this);
+    if (it != GetOpener()->pending_new_windows_.end()) {
+      const NewWindowInfo& new_window_info = it->second;
+      if (new_window_info.changed || !guest_web_contents()->HasOpener())
+        NavigateGuest(new_window_info.url.spec());
+    } else {
+      NOTREACHED();
+    }
+
+    // Once a new guest is attached to the DOM of the embedder page, then the
+    // lifetime of the new guest is no longer managed by the opener guest.
+    GetOpener()->pending_new_windows_.erase(this);
+  }
+}
+
+void WebViewGuest::DidInitialize() {
+  script_executor_.reset(
+      new ScriptExecutor(guest_web_contents(), &script_observers_));
+
+  notification_registrar_.Add(
+      this, content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
+      content::Source<WebContents>(guest_web_contents()));
+
+  notification_registrar_.Add(
+      this, content::NOTIFICATION_RESOURCE_RECEIVED_REDIRECT,
+      content::Source<WebContents>(guest_web_contents()));
+
+  if (web_view_guest_delegate_)
+    web_view_guest_delegate_->OnDidInitialize();
+  AttachWebViewHelpers(guest_web_contents());
+}
+
+void WebViewGuest::AttachWebViewHelpers(WebContents* contents) {
+  if (web_view_guest_delegate_)
+    web_view_guest_delegate_->OnAttachWebViewHelpers(contents);
+  web_view_permission_helper_.reset(new WebViewPermissionHelper(this));
+}
+
+void WebViewGuest::DidStopLoading() {
+  scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
+  DispatchEventToEmbedder(
+      new GuestViewBase::Event(webview::kEventLoadStop, args.Pass()));
+}
+
+void WebViewGuest::EmbedderDestroyed() {
+  // TODO(fsamuel): WebRequest event listeners for <webview> should survive
+  // reparenting of a <webview> within a single embedder. Right now, we keep
+  // around the browser state for the listener for the lifetime of the embedder.
+  // Ideally, the lifetime of the listeners should match the lifetime of the
+  // <webview> DOM node. Once http://crbug.com/156219 is resolved we can move
+  // the call to RemoveWebViewEventListenersOnIOThread back to
+  // WebViewGuest::WebContentsDestroyed.
+  content::BrowserThread::PostTask(
+      content::BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(
+          &RemoveWebViewEventListenersOnIOThread,
+          browser_context(), embedder_extension_id(),
+          embedder_render_process_id(),
+          view_instance_id()));
+}
+
+void WebViewGuest::GuestDestroyed() {
+  // Clean up custom context menu items for this guest.
+  if (web_view_guest_delegate_)
+    web_view_guest_delegate_->OnGuestDestroyed();
+  RemoveWebViewStateFromIOThread(web_contents());
+}
+
+void WebViewGuest::GuestReady() {
+  // The guest RenderView should always live in an isolated guest process.
+  CHECK(guest_web_contents()->GetRenderProcessHost()->IsIsolatedGuest());
+  Send(new ExtensionMsg_SetFrameName(
+      guest_web_contents()->GetRoutingID(), name_));
+}
+
+void WebViewGuest::GuestSizeChangedDueToAutoSize(const gfx::Size& old_size,
+                                                 const gfx::Size& new_size) {
+  scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
+  args->SetInteger(webview::kOldHeight, old_size.height());
+  args->SetInteger(webview::kOldWidth, old_size.width());
+  args->SetInteger(webview::kNewHeight, new_size.height());
+  args->SetInteger(webview::kNewWidth, new_size.width());
+  DispatchEventToEmbedder(
+      new GuestViewBase::Event(webview::kEventSizeChanged, args.Pass()));
+}
+
+bool WebViewGuest::IsAutoSizeSupported() const {
+  return true;
+}
+
+bool WebViewGuest::IsDragAndDropEnabled() const {
+  return true;
+}
+
+void WebViewGuest::WillDestroy() {
+  if (!attached() && GetOpener())
+    GetOpener()->pending_new_windows_.erase(this);
+  DestroyUnattachedWindows();
+}
+
+bool WebViewGuest::AddMessageToConsole(WebContents* source,
+                                       int32 level,
+                                       const base::string16& message,
+                                       int32 line_no,
+                                       const base::string16& source_id) {
+  scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
+  // Log levels are from base/logging.h: LogSeverity.
+  args->SetInteger(webview::kLevel, level);
+  args->SetString(webview::kMessage, message);
+  args->SetInteger(webview::kLine, line_no);
+  args->SetString(webview::kSourceId, source_id);
+  DispatchEventToEmbedder(
+      new GuestViewBase::Event(webview::kEventConsoleMessage, args.Pass()));
+  return true;
+}
+
+void WebViewGuest::CloseContents(WebContents* source) {
+  scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
+  DispatchEventToEmbedder(
+      new GuestViewBase::Event(webview::kEventClose, args.Pass()));
+}
+
+void WebViewGuest::FindReply(WebContents* source,
+                             int request_id,
+                             int number_of_matches,
+                             const gfx::Rect& selection_rect,
+                             int active_match_ordinal,
+                             bool final_update) {
+  find_helper_.FindReply(request_id, number_of_matches, selection_rect,
+                         active_match_ordinal, final_update);
+}
+
+bool WebViewGuest::HandleContextMenu(
+    const content::ContextMenuParams& params) {
+  if (!web_view_guest_delegate_)
+    return false;
+  return web_view_guest_delegate_->HandleContextMenu(params);
+}
+
+void WebViewGuest::HandleKeyboardEvent(
+    WebContents* source,
+    const content::NativeWebKeyboardEvent& event) {
+  if (!attached())
+    return;
+
+  if (HandleKeyboardShortcuts(event))
+    return;
+
+  // Send the unhandled keyboard events back to the embedder to reprocess them.
+  // TODO(fsamuel): This introduces the possibility of out-of-order keyboard
+  // events because the guest may be arbitrarily delayed when responding to
+  // keyboard events. In that time, the embedder may have received and processed
+  // additional key events. This needs to be fixed as soon as possible.
+  // See http://crbug.com/229882.
+  embedder_web_contents()->GetDelegate()->HandleKeyboardEvent(
+      web_contents(), event);
+}
+
+void WebViewGuest::LoadProgressChanged(content::WebContents* source,
+                                       double progress) {
+  scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
+  args->SetString(guestview::kUrl, guest_web_contents()->GetURL().spec());
+  args->SetDouble(webview::kProgress, progress);
+  DispatchEventToEmbedder(
+      new GuestViewBase::Event(webview::kEventLoadProgress, args.Pass()));
+}
+
+void WebViewGuest::LoadAbort(bool is_top_level,
+                             const GURL& url,
+                             const std::string& error_type) {
+  scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
+  args->SetBoolean(guestview::kIsTopLevel, is_top_level);
+  args->SetString(guestview::kUrl, url.possibly_invalid_spec());
+  args->SetString(guestview::kReason, error_type);
+  DispatchEventToEmbedder(
+      new GuestViewBase::Event(webview::kEventLoadAbort, args.Pass()));
+}
+
+void WebViewGuest::OnFrameNameChanged(bool is_top_level,
+                                      const std::string& name) {
+  if (!is_top_level)
+    return;
+
+  if (name_ == name)
+    return;
+
+  ReportFrameNameChange(name);
+}
+
+void WebViewGuest::CreateNewGuestWebViewWindow(
+    const content::OpenURLParams& params) {
+  GuestViewManager* guest_manager =
+      GuestViewManager::FromBrowserContext(browser_context());
+  // Set the attach params to use the same partition as the opener.
+  // We pull the partition information from the site's URL, which is of the
+  // form guest://site/{persist}?{partition_name}.
+  const GURL& site_url = guest_web_contents()->GetSiteInstance()->GetSiteURL();
+  const std::string storage_partition_id =
+      GetStoragePartitionIdFromSiteURL(site_url);
+  base::DictionaryValue create_params;
+  create_params.SetString(webview::kStoragePartitionId, storage_partition_id);
+
+  guest_manager->CreateGuest(WebViewGuest::Type,
+                             embedder_extension_id(),
+                             embedder_web_contents(),
+                             create_params,
+                             base::Bind(&WebViewGuest::NewGuestWebViewCallback,
+                                        base::Unretained(this),
+                                        params));
+}
+
+void WebViewGuest::NewGuestWebViewCallback(
+    const content::OpenURLParams& params,
+    content::WebContents* guest_web_contents) {
+  WebViewGuest* new_guest = WebViewGuest::FromWebContents(guest_web_contents);
+  new_guest->SetOpener(this);
+
+  // Take ownership of |new_guest|.
+  pending_new_windows_.insert(
+      std::make_pair(new_guest, NewWindowInfo(params.url, std::string())));
+
+  // Request permission to show the new window.
+  RequestNewWindowPermission(params.disposition, gfx::Rect(),
+                             params.user_gesture,
+                             new_guest->guest_web_contents());
+}
+
+// TODO(fsamuel): Find a reliable way to test the 'responsive' and
+// 'unresponsive' events.
+void WebViewGuest::RendererResponsive(content::WebContents* source) {
+  scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
+  args->SetInteger(webview::kProcessId,
+      guest_web_contents()->GetRenderProcessHost()->GetID());
+  DispatchEventToEmbedder(
+      new GuestViewBase::Event(webview::kEventResponsive, args.Pass()));
+}
+
+void WebViewGuest::RendererUnresponsive(content::WebContents* source) {
+  scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
+  args->SetInteger(webview::kProcessId,
+      guest_web_contents()->GetRenderProcessHost()->GetID());
+  DispatchEventToEmbedder(
+      new GuestViewBase::Event(webview::kEventUnresponsive, args.Pass()));
+}
+
+void WebViewGuest::Observe(int type,
+                           const content::NotificationSource& source,
+                           const content::NotificationDetails& details) {
+  switch (type) {
+    case content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME: {
+      DCHECK_EQ(content::Source<WebContents>(source).ptr(),
+                guest_web_contents());
+      if (content::Source<WebContents>(source).ptr() == guest_web_contents())
+        LoadHandlerCalled();
+      break;
+    }
+    case content::NOTIFICATION_RESOURCE_RECEIVED_REDIRECT: {
+      DCHECK_EQ(content::Source<WebContents>(source).ptr(),
+                guest_web_contents());
+      content::ResourceRedirectDetails* resource_redirect_details =
+          content::Details<content::ResourceRedirectDetails>(details).ptr();
+      bool is_top_level = resource_redirect_details->resource_type ==
+                          content::RESOURCE_TYPE_MAIN_FRAME;
+      LoadRedirect(resource_redirect_details->url,
+                   resource_redirect_details->new_url,
+                   is_top_level);
+      break;
+    }
+    default:
+      NOTREACHED() << "Unexpected notification sent.";
+      break;
+  }
+}
+
+double WebViewGuest::GetZoom() {
+  if (!web_view_guest_delegate_)
+    return 1.0;
+  return web_view_guest_delegate_->GetZoom();
+}
+
+void WebViewGuest::Find(
+    const base::string16& search_text,
+    const blink::WebFindOptions& options,
+    scoped_refptr<WebViewInternalFindFunction> find_function) {
+  find_helper_.Find(guest_web_contents(), search_text, options, find_function);
+}
+
+void WebViewGuest::StopFinding(content::StopFindAction action) {
+  find_helper_.CancelAllFindSessions();
+  guest_web_contents()->StopFinding(action);
+}
+
+void WebViewGuest::Go(int relative_index) {
+  guest_web_contents()->GetController().GoToOffset(relative_index);
+}
+
+void WebViewGuest::Reload() {
+  // TODO(fsamuel): Don't check for repost because we don't want to show
+  // Chromium's repost warning. We might want to implement a separate API
+  // for registering a callback if a repost is about to happen.
+  guest_web_contents()->GetController().Reload(false);
+}
+
+void WebViewGuest::SetUserAgentOverride(
+    const std::string& user_agent_override) {
+  if (!attached())
+    return;
+  is_overriding_user_agent_ = !user_agent_override.empty();
+  if (is_overriding_user_agent_) {
+    content::RecordAction(UserMetricsAction("WebView.Guest.OverrideUA"));
+  }
+  guest_web_contents()->SetUserAgentOverride(user_agent_override);
+}
+
+void WebViewGuest::Stop() {
+  guest_web_contents()->Stop();
+}
+
+void WebViewGuest::Terminate() {
+  content::RecordAction(UserMetricsAction("WebView.Guest.Terminate"));
+  base::ProcessHandle process_handle =
+      guest_web_contents()->GetRenderProcessHost()->GetHandle();
+  if (process_handle)
+    base::KillProcess(process_handle, content::RESULT_CODE_KILLED, false);
+}
+
+bool WebViewGuest::ClearData(const base::Time remove_since,
+                             uint32 removal_mask,
+                             const base::Closure& callback) {
+  content::RecordAction(UserMetricsAction("WebView.Guest.ClearData"));
+  content::StoragePartition* partition =
+      content::BrowserContext::GetStoragePartition(
+          guest_web_contents()->GetBrowserContext(),
+          guest_web_contents()->GetSiteInstance());
+
+  if (!partition)
+    return false;
+
+  partition->ClearData(
+      removal_mask,
+      content::StoragePartition::QUOTA_MANAGED_STORAGE_MASK_ALL,
+      GURL(),
+      content::StoragePartition::OriginMatcherFunction(),
+      remove_since,
+      base::Time::Now(),
+      callback);
+  return true;
+}
+
+WebViewGuest::WebViewGuest(content::BrowserContext* browser_context,
+                           int guest_instance_id)
+    : GuestView<WebViewGuest>(browser_context, guest_instance_id),
+      is_overriding_user_agent_(false),
+      find_helper_(this),
+      javascript_dialog_helper_(this) {
+  web_view_guest_delegate_.reset(new ChromeWebViewGuestDelegate(this));
+}
+
+WebViewGuest::~WebViewGuest() {
+}
+
+void WebViewGuest::DidCommitProvisionalLoadForFrame(
+    content::RenderFrameHost* render_frame_host,
+    const GURL& url,
+    content::PageTransition transition_type) {
+  find_helper_.CancelAllFindSessions();
+
+  scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
+  args->SetString(guestview::kUrl, url.spec());
+  args->SetBoolean(guestview::kIsTopLevel, !render_frame_host->GetParent());
+  args->SetInteger(webview::kInternalCurrentEntryIndex,
+      guest_web_contents()->GetController().GetCurrentEntryIndex());
+  args->SetInteger(webview::kInternalEntryCount,
+      guest_web_contents()->GetController().GetEntryCount());
+  args->SetInteger(webview::kInternalProcessId,
+      guest_web_contents()->GetRenderProcessHost()->GetID());
+  DispatchEventToEmbedder(
+      new GuestViewBase::Event(webview::kEventLoadCommit, args.Pass()));
+  if (web_view_guest_delegate_) {
+    web_view_guest_delegate_->OnDidCommitProvisionalLoadForFrame(
+        !render_frame_host->GetParent());
+  }
+}
+
+void WebViewGuest::DidFailProvisionalLoad(
+    content::RenderFrameHost* render_frame_host,
+    const GURL& validated_url,
+    int error_code,
+    const base::string16& error_description) {
+  LoadAbort(!render_frame_host->GetParent(), validated_url,
+            net::ErrorToShortString(error_code));
+}
+
+void WebViewGuest::DidStartProvisionalLoadForFrame(
+    content::RenderFrameHost* render_frame_host,
+    const GURL& validated_url,
+    bool is_error_page,
+    bool is_iframe_srcdoc) {
+  scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
+  args->SetString(guestview::kUrl, validated_url.spec());
+  args->SetBoolean(guestview::kIsTopLevel, !render_frame_host->GetParent());
+  DispatchEventToEmbedder(
+      new GuestViewBase::Event(webview::kEventLoadStart, args.Pass()));
+}
+
+void WebViewGuest::DocumentLoadedInFrame(
+    content::RenderFrameHost* render_frame_host) {
+  if (web_view_guest_delegate_)
+    web_view_guest_delegate_->OnDocumentLoadedInFrame(render_frame_host);
+}
+
+bool WebViewGuest::OnMessageReceived(const IPC::Message& message,
+                                     RenderFrameHost* render_frame_host) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(WebViewGuest, message)
+    IPC_MESSAGE_HANDLER(ExtensionHostMsg_FrameNameChanged, OnFrameNameChanged)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+  return handled;
+}
+
+void WebViewGuest::RenderProcessGone(base::TerminationStatus status) {
+  // Cancel all find sessions in progress.
+  find_helper_.CancelAllFindSessions();
+
+  scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
+  args->SetInteger(webview::kProcessId,
+                   guest_web_contents()->GetRenderProcessHost()->GetID());
+  args->SetString(webview::kReason, TerminationStatusToString(status));
+  DispatchEventToEmbedder(
+      new GuestViewBase::Event(webview::kEventExit, args.Pass()));
+}
+
+void WebViewGuest::UserAgentOverrideSet(const std::string& user_agent) {
+  if (!attached())
+    return;
+  content::NavigationController& controller =
+      guest_web_contents()->GetController();
+  content::NavigationEntry* entry = controller.GetVisibleEntry();
+  if (!entry)
+    return;
+  entry->SetIsOverridingUserAgent(!user_agent.empty());
+  guest_web_contents()->GetController().Reload(false);
+}
+
+void WebViewGuest::ReportFrameNameChange(const std::string& name) {
+  name_ = name;
+  scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
+  args->SetString(webview::kName, name);
+  DispatchEventToEmbedder(
+      new GuestViewBase::Event(webview::kEventFrameNameChanged, args.Pass()));
+}
+
+void WebViewGuest::LoadHandlerCalled() {
+  scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
+  DispatchEventToEmbedder(
+      new GuestViewBase::Event(webview::kEventContentLoad, args.Pass()));
+}
+
+void WebViewGuest::LoadRedirect(const GURL& old_url,
+                                const GURL& new_url,
+                                bool is_top_level) {
+  scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
+  args->SetBoolean(guestview::kIsTopLevel, is_top_level);
+  args->SetString(webview::kNewURL, new_url.spec());
+  args->SetString(webview::kOldURL, old_url.spec());
+  DispatchEventToEmbedder(
+      new GuestViewBase::Event(webview::kEventLoadRedirect, args.Pass()));
+}
+
+void WebViewGuest::PushWebViewStateToIOThread() {
+  const GURL& site_url = guest_web_contents()->GetSiteInstance()->GetSiteURL();
+  std::string partition_domain;
+  std::string partition_id;
+  bool in_memory;
+  if (!GetGuestPartitionConfigForSite(
+          site_url, &partition_domain, &partition_id, &in_memory)) {
+    NOTREACHED();
+    return;
+  }
+  DCHECK(embedder_extension_id() == partition_domain);
+
+  WebViewRendererState::WebViewInfo web_view_info;
+  web_view_info.embedder_process_id = embedder_render_process_id();
+  web_view_info.instance_id = view_instance_id();
+  web_view_info.partition_id = partition_id;
+  web_view_info.embedder_extension_id = embedder_extension_id();
+
+  content::BrowserThread::PostTask(
+      content::BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(&WebViewRendererState::AddGuest,
+                 base::Unretained(WebViewRendererState::GetInstance()),
+                 guest_web_contents()->GetRenderProcessHost()->GetID(),
+                 guest_web_contents()->GetRoutingID(),
+                 web_view_info));
+}
+
+// static
+void WebViewGuest::RemoveWebViewStateFromIOThread(
+    WebContents* web_contents) {
+  content::BrowserThread::PostTask(
+      content::BrowserThread::IO, FROM_HERE,
+      base::Bind(
+          &WebViewRendererState::RemoveGuest,
+          base::Unretained(WebViewRendererState::GetInstance()),
+          web_contents->GetRenderProcessHost()->GetID(),
+          web_contents->GetRoutingID()));
+}
+
+content::WebContents* WebViewGuest::CreateNewGuestWindow(
+    const content::WebContents::CreateParams& create_params) {
+  GuestViewManager* guest_manager =
+      GuestViewManager::FromBrowserContext(browser_context());
+  return guest_manager->CreateGuestWithWebContentsParams(
+      WebViewGuest::Type,
+      embedder_extension_id(),
+      embedder_web_contents()->GetRenderProcessHost()->GetID(),
+      create_params);
+}
+
+void WebViewGuest::RequestMediaAccessPermission(
+    content::WebContents* source,
+    const content::MediaStreamRequest& request,
+    const content::MediaResponseCallback& callback) {
+  web_view_permission_helper_->RequestMediaAccessPermission(source,
+                                                            request,
+                                                            callback);
+}
+
+void WebViewGuest::CanDownload(
+    content::RenderViewHost* render_view_host,
+    const GURL& url,
+    const std::string& request_method,
+    const base::Callback<void(bool)>& callback) {
+  web_view_permission_helper_->CanDownload(render_view_host,
+                                           url,
+                                           request_method,
+                                           callback);
+}
+
+void WebViewGuest::RequestPointerLockPermission(
+    bool user_gesture,
+    bool last_unlocked_by_target,
+    const base::Callback<void(bool)>& callback) {
+  web_view_permission_helper_->RequestPointerLockPermission(
+      user_gesture,
+      last_unlocked_by_target,
+      callback);
+}
+
+void WebViewGuest::WillAttachToEmbedder() {
+  // We must install the mapping from guests to WebViews prior to resuming
+  // suspended resource loads so that the WebRequest API will catch resource
+  // requests.
+  PushWebViewStateToIOThread();
+}
+
+content::JavaScriptDialogManager*
+    WebViewGuest::GetJavaScriptDialogManager() {
+  return &javascript_dialog_helper_;
+}
+
+content::ColorChooser* WebViewGuest::OpenColorChooser(
+    WebContents* web_contents,
+    SkColor color,
+    const std::vector<content::ColorSuggestion>& suggestions) {
+  if (!attached() || !embedder_web_contents()->GetDelegate())
+    return NULL;
+  return embedder_web_contents()->GetDelegate()->OpenColorChooser(
+      web_contents, color, suggestions);
+}
+
+void WebViewGuest::RunFileChooser(WebContents* web_contents,
+                                  const content::FileChooserParams& params) {
+  if (!attached() || !embedder_web_contents()->GetDelegate())
+    return;
+
+  embedder_web_contents()->GetDelegate()->RunFileChooser(web_contents, params);
+}
+
+void WebViewGuest::NavigateGuest(const std::string& src) {
+  GURL url = ResolveURL(src);
+
+  // Do not allow navigating a guest to schemes other than known safe schemes.
+  // This will block the embedder trying to load unwanted schemes, e.g.
+  // chrome://settings.
+  bool scheme_is_blocked =
+      (!content::ChildProcessSecurityPolicy::GetInstance()->IsWebSafeScheme(
+           url.scheme()) &&
+       !url.SchemeIs(url::kAboutScheme)) ||
+      url.SchemeIs(url::kJavaScriptScheme);
+  if (scheme_is_blocked || !url.is_valid()) {
+    LoadAbort(true /* is_top_level */, url,
+              net::ErrorToShortString(net::ERR_ABORTED));
+    return;
+  }
+
+  GURL validated_url(url);
+  guest_web_contents()->GetRenderProcessHost()->
+      FilterURL(false, &validated_url);
+  // As guests do not swap processes on navigation, only navigations to
+  // normal web URLs are supported.  No protocol handlers are installed for
+  // other schemes (e.g., WebUI or extensions), and no permissions or bindings
+  // can be granted to the guest process.
+  LoadURLWithParams(validated_url,
+                    content::Referrer(),
+                    content::PAGE_TRANSITION_AUTO_TOPLEVEL,
+                    guest_web_contents());
+}
+
+bool WebViewGuest::HandleKeyboardShortcuts(
+    const content::NativeWebKeyboardEvent& event) {
+  if (event.type != blink::WebInputEvent::RawKeyDown)
+    return false;
+
+  // If the user hits the escape key without any modifiers then unlock the
+  // mouse if necessary.
+  if ((event.windowsKeyCode == ui::VKEY_ESCAPE) &&
+      !(event.modifiers & blink::WebInputEvent::InputModifiers)) {
+    return guest_web_contents()->GotResponseToLockMouseRequest(false);
+  }
+
+#if defined(OS_MACOSX)
+  if (event.modifiers != blink::WebInputEvent::MetaKey)
+    return false;
+
+  if (event.windowsKeyCode == ui::VKEY_OEM_4) {
+    Go(-1);
+    return true;
+  }
+
+  if (event.windowsKeyCode == ui::VKEY_OEM_6) {
+    Go(1);
+    return true;
+  }
+#else
+  if (event.windowsKeyCode == ui::VKEY_BROWSER_BACK) {
+    Go(-1);
+    return true;
+  }
+
+  if (event.windowsKeyCode == ui::VKEY_BROWSER_FORWARD) {
+    Go(1);
+    return true;
+  }
+#endif
+
+  return false;
+}
+
+void WebViewGuest::SetUpAutoSize() {
+  // Read the autosize parameters passed in from the embedder.
+  bool auto_size_enabled = false;
+  attach_params()->GetBoolean(webview::kAttributeAutoSize, &auto_size_enabled);
+
+  int max_height = 0;
+  int max_width = 0;
+  attach_params()->GetInteger(webview::kAttributeMaxHeight, &max_height);
+  attach_params()->GetInteger(webview::kAttributeMaxWidth, &max_width);
+
+  int min_height = 0;
+  int min_width = 0;
+  attach_params()->GetInteger(webview::kAttributeMinHeight, &min_height);
+  attach_params()->GetInteger(webview::kAttributeMinWidth, &min_width);
+
+  // Call SetAutoSize to apply all the appropriate validation and clipping of
+  // values.
+  SetAutoSize(auto_size_enabled,
+              gfx::Size(min_width, min_height),
+              gfx::Size(max_width, max_height));
+}
+
+void WebViewGuest::ShowContextMenu(
+    int request_id,
+    const WebViewGuestDelegate::MenuItemVector* items) {
+  if (web_view_guest_delegate_)
+    web_view_guest_delegate_->OnShowContextMenu(request_id, items);
+}
+
+void WebViewGuest::SetName(const std::string& name) {
+  if (name_ == name)
+    return;
+  name_ = name;
+
+  Send(new ExtensionMsg_SetFrameName(routing_id(), name_));
+}
+
+void WebViewGuest::SetZoom(double zoom_factor) {
+  if (web_view_guest_delegate_)
+    web_view_guest_delegate_->OnSetZoom(zoom_factor);
+}
+
+void WebViewGuest::AddNewContents(content::WebContents* source,
+                                  content::WebContents* new_contents,
+                                  WindowOpenDisposition disposition,
+                                  const gfx::Rect& initial_pos,
+                                  bool user_gesture,
+                                  bool* was_blocked) {
+  if (was_blocked)
+    *was_blocked = false;
+  RequestNewWindowPermission(disposition,
+                             initial_pos,
+                             user_gesture,
+                             new_contents);
+}
+
+content::WebContents* WebViewGuest::OpenURLFromTab(
+    content::WebContents* source,
+    const content::OpenURLParams& params) {
+  // If the guest wishes to navigate away prior to attachment then we save the
+  // navigation to perform upon attachment. Navigation initializes a lot of
+  // state that assumes an embedder exists, such as RenderWidgetHostViewGuest.
+  // Navigation also resumes resource loading which we don't want to allow
+  // until attachment.
+  if (!attached()) {
+    WebViewGuest* opener = GetOpener();
+    PendingWindowMap::iterator it =
+        opener->pending_new_windows_.find(this);
+    if (it == opener->pending_new_windows_.end())
+      return NULL;
+    const NewWindowInfo& info = it->second;
+    NewWindowInfo new_window_info(params.url, info.name);
+    new_window_info.changed = new_window_info.url != info.url;
+    it->second = new_window_info;
+    return NULL;
+  }
+  if (params.disposition == CURRENT_TAB) {
+    // This can happen for cross-site redirects.
+    LoadURLWithParams(params.url, params.referrer, params.transition, source);
+    return source;
+  }
+
+  CreateNewGuestWebViewWindow(params);
+  return NULL;
+}
+
+void WebViewGuest::WebContentsCreated(WebContents* source_contents,
+                                      int opener_render_frame_id,
+                                      const base::string16& frame_name,
+                                      const GURL& target_url,
+                                      content::WebContents* new_contents) {
+  WebViewGuest* guest = WebViewGuest::FromWebContents(new_contents);
+  CHECK(guest);
+  guest->SetOpener(this);
+  std::string guest_name = base::UTF16ToUTF8(frame_name);
+  guest->name_ = guest_name;
+  pending_new_windows_.insert(
+      std::make_pair(guest, NewWindowInfo(target_url, guest_name)));
+}
+
+void WebViewGuest::LoadURLWithParams(const GURL& url,
+                                     const content::Referrer& referrer,
+                                     content::PageTransition transition_type,
+                                     content::WebContents* web_contents) {
+  content::NavigationController::LoadURLParams load_url_params(url);
+  load_url_params.referrer = referrer;
+  load_url_params.transition_type = transition_type;
+  load_url_params.extra_headers = std::string();
+  if (is_overriding_user_agent_) {
+    load_url_params.override_user_agent =
+        content::NavigationController::UA_OVERRIDE_TRUE;
+  }
+  web_contents->GetController().LoadURLWithParams(load_url_params);
+}
+
+void WebViewGuest::RequestNewWindowPermission(
+    WindowOpenDisposition disposition,
+    const gfx::Rect& initial_bounds,
+    bool user_gesture,
+    content::WebContents* new_contents) {
+  WebViewGuest* guest = WebViewGuest::FromWebContents(new_contents);
+  if (!guest)
+    return;
+  PendingWindowMap::iterator it = pending_new_windows_.find(guest);
+  if (it == pending_new_windows_.end())
+    return;
+  const NewWindowInfo& new_window_info = it->second;
+
+  // Retrieve the opener partition info if we have it.
+  const GURL& site_url = new_contents->GetSiteInstance()->GetSiteURL();
+  std::string storage_partition_id = GetStoragePartitionIdFromSiteURL(site_url);
+
+  base::DictionaryValue request_info;
+  request_info.SetInteger(webview::kInitialHeight, initial_bounds.height());
+  request_info.SetInteger(webview::kInitialWidth, initial_bounds.width());
+  request_info.Set(webview::kTargetURL,
+                   new base::StringValue(new_window_info.url.spec()));
+  request_info.Set(webview::kName, new base::StringValue(new_window_info.name));
+  request_info.SetInteger(webview::kWindowID, guest->guest_instance_id());
+  // We pass in partition info so that window-s created through newwindow
+  // API can use it to set their partition attribute.
+  request_info.Set(webview::kStoragePartitionId,
+                   new base::StringValue(storage_partition_id));
+  request_info.Set(
+      webview::kWindowOpenDisposition,
+      new base::StringValue(WindowOpenDispositionToString(disposition)));
+
+  web_view_permission_helper_->
+      RequestPermission(WEB_VIEW_PERMISSION_TYPE_NEW_WINDOW,
+                        request_info,
+                        base::Bind(&WebViewGuest::OnWebViewNewWindowResponse,
+                                   base::Unretained(this),
+                                   guest->guest_instance_id()),
+                                   false /* allowed_by_default */);
+}
+
+void WebViewGuest::DestroyUnattachedWindows() {
+  // Destroy() reaches in and removes the WebViewGuest from its opener's
+  // pending_new_windows_ set. To avoid mutating the set while iterating, we
+  // create a copy of the pending new windows set and iterate over the copy.
+  PendingWindowMap pending_new_windows(pending_new_windows_);
+  // Clean up unattached new windows opened by this guest.
+  for (PendingWindowMap::const_iterator it = pending_new_windows.begin();
+       it != pending_new_windows.end(); ++it) {
+    it->first->Destroy();
+  }
+  // All pending windows should be removed from the set after Destroy() is
+  // called on all of them.
+  DCHECK(pending_new_windows_.empty());
+}
+
+GURL WebViewGuest::ResolveURL(const std::string& src) {
+  if (!in_extension()) {
+    NOTREACHED();
+    return GURL(src);
+  }
+
+  GURL default_url(base::StringPrintf("%s://%s/",
+                                      kExtensionScheme,
+                                      embedder_extension_id().c_str()));
+  return default_url.Resolve(src);
+}
+
+void WebViewGuest::OnWebViewNewWindowResponse(
+    int new_window_instance_id,
+    bool allow,
+    const std::string& user_input) {
+  WebViewGuest* guest =
+      WebViewGuest::From(embedder_render_process_id(), new_window_instance_id);
+  if (!guest)
+    return;
+
+  if (!allow)
+    guest->Destroy();
+}
+
+}  // namespace extensions